U1084A Datasheet, PDF (4/20 Pages) Keysight Technologies – Acqiris High-Speed PCIe Digitizers with On-Board Signal Processing

High-Speed Digitizer
with On-Board Signal Processing
Front end mezzanine with ADC
The analog mezzanine contains the analog signal condition-
ing (amplification, offset, and channel interleaving) as
well as the analog-to-digital converter (ADC) component.
Impedance on the two input channels (CH1, CH2) is fixed at
50 Ω ± 1%. Either input can be used as a trigger source.
Normally the two channel inputs are sent to their dedicated
ADCs and simultaneously sampled at 2 GS/s. Alternatively,
with channel interleaving, the signal from either one of the
channels can be sent to both ADCs to achieve sampling
rates of up to 4 GS/s.
Trigger and clock
The trigger and clock circuitry provides access to trigger
input and output as well as reference clock input. The clock
circuit provides calibration signals and ADC clock signals
for the analog mezzanine as well as the FPGA for data
processing. The built-in 15 ps trigger time interpolator (TTI)
allows for accurate timing measurements.
I/O control
Control over the trigger, time base, and data processing
is made even more flexible by the addition of front-panel
input/output connections.
The six MCX-type front-panel connectors can support an
external clock (up to 2 GHz) or reference signal (10 MHz),
an external trigger input, a trigger output, and three addi-
tional I/O digital control lines (I/O A, B, and C). The latter
can be used for monitoring or modifying the card’ status
and configuration. Trigger output can also be used as an
I/O control.
PCI Express
The use of the PCIe x4 allows data rates up to 520 MB/s,
increasing throughput to reduce measurement time over
traditional PCI based technologies.
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